scholarly journals Letter to the Editor: A cohort study and not a case control study

2012 ◽  
Vol 39 (3) ◽  
pp. 125
Author(s):  
Olusegun Ojo ◽  
Gerald McGwin
Keyword(s):  
Cohort Study ◽  
Case Control Study ◽  
Case Control ◽  
Letter To The Editor ◽  
Control Study

scholarly journals Musculoskeletal pain related to COVID-19 survivors after hospitalization: A short review (Dolor musculoesquelético en supervivientes del COVID-19 tras la hospitalización: Una breve revision)

Retos ◽  
2022 ◽  
Vol 44 ◽  
pp. 789-795
Author(s):  
Elisa Fiore ◽  
Camilo Corbellini ◽  
Lara Acucella ◽  
Stefano Gargano ◽  
Eleuterio Sánchez Romero ◽  
...  
Keyword(s):  
Cohort Study ◽  
Musculoskeletal Pain ◽  
Preliminary Data ◽  
Consensus Statement ◽  
Case Control Study ◽  
Short Review ◽  
Case Control ◽  
Widespread Pain ◽  
Letter To The Editor ◽  
Control Study

  Objective: This review aimed to provide an update on the characterization and impact of musculoskeletal pain in COVID-19 survivors. Methods: It is considered articles on subjects who had been recovered from COVID-19 infection after hospitalization (COVID-19 survivors) with secondary musculoskeletal pain. Results: Six articles (one editorial, one consensus statement, one letter to the editor, one case-control study, one cohort study and one review) showed the polyhedral effects of the SARS-CoV-2 on musculoskeletal pain. This short review was not able to clearly identify what the pathogenesis of musculoskeletal pain was in COVID-19 survivors. Conclusion: Preliminary data showed that widespread pain similar to the pattern compatible with pain of musculoskeletal origin could characterize symptoms after SARS-CoV-2 infection.  Resumen. Objetivo: Esta revisión tuvo como objetivo proporcionar una actualización sobre la caracterización y el impacto del dolor musculoesquelético en los supervivientes de COVID-19. Métodos: Se consideraron artículos sobre sujetos que se recuperaron de la infección por COVID-19 tras la hospitalización (supervivientes de COVID-19) con dolor musculoesquelético secundario. Resultados: Seis artículos (un editorial, una declaración de consenso, una carta al editor, un estudio de casos y controles, un estudio de cohortes y una revisión) mostraron los efectos poliédricos del SARS-CoV-2 sobre el dolor musculoesquelético.  Esta breve revisión no pudo identificar claramente cuál era la patogénesis del dolor musculoesquelético en los supervivientes del COVID-19. Conclusión: Los datos preliminares mostraron que el dolor generalizado similar al patrón compatible con el dolor de origen musculoesquelético podría caracterizar los síntomas después de la infección por SARS-CoV-2.

scholarly journals An ADAM33 Polymorphism Associates with Progression of Preschool Wheeze into Childhood Asthma: A Prospective Case-Control Study with Replication in a Birth Cohort Study

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0119349 ◽  
Author(s):  
Ester M. M. Klaassen ◽  
John Penders ◽  
Quirijn Jöbsis ◽  
Kim D. G. van de Kant ◽  
Carel Thijs ◽  
...  
Keyword(s):  
Cohort Study ◽  
Birth Cohort ◽  
Childhood Asthma ◽  
Case Control Study ◽  
Case Control ◽  
Birth Cohort Study ◽  
Control Study ◽  
Prospective Case Control Study

First norovirus outbreaks associated with consumption of green seaweed (Enteromorpha spp.) in South Korea

2014 ◽  
Vol 143 (3) ◽  
pp. 515-521 ◽  
Author(s):  
J. H. PARK ◽  
H. S. JEONG ◽  
J. S. LEE ◽  
S. W. LEE ◽  
Y. H. CHOI ◽  
...  
Keyword(s):  
Cohort Study ◽  
Relative Risk ◽  
Confidence Interval ◽  
Retrospective Cohort Study ◽  
Retrospective Cohort ◽  
Case Control Study ◽  
Case Control ◽  
Green Seaweed ◽  
Norovirus Gii ◽  
Control Study

SUMMARYIn February 2012, an outbreak of gastroenteritis was reported in school A; a successive outbreak was reported at school B. A retrospective cohort study conducted in school A showed that seasoned green seaweed with radishes (relative risk 7·9, 95% confidence interval 1·1–56·2) was significantly associated with illness. Similarly, a case-control study of students at school B showed that cases were 5·1 (95% confidence interval 1·1–24·8) times more likely to have eaten seasoned green seaweed with pears. Multiple norovirus genotypes were detected in samples from students in schools A and B. Norovirus GII.6 isolated from schools A and B were phylogenetically indistinguishable. Green seaweed was supplied by company X, and norovirus GII.4 was isolated from samples of green seaweed. Green seaweed was assumed to be linked to these outbreaks. To our knowledge, this is the first reported norovirus outbreak associated with green seaweed.

Quantitative Epidemiology

1996 ◽  
Vol 17 (4) ◽  
pp. 249-255
Author(s):  
Jonathan Freeman
Keyword(s):  
Cohort Study ◽  
Cohort Studies ◽  
Quantitative Methods ◽  
Case Control Study ◽  
Experimental Studies ◽  
Case Control ◽  
Case Control Studies ◽  
Hospital Epidemiology ◽  
Quantitative Epidemiology ◽  
Control Study

AbstractWe provide guidance for new practitioners in the vocabulary of modern epidemiology and the application of quantitative methods. Most hospital epidemiology involves surveillance (observational) data that were not part of a planned experiment, so the rubric and logic of controlled experimental studies cannot be applied. Forms of incidence and prevalence often are confused. The names “cohort study” and “case-control study” are unfortunate, as cohort studies rarely involve cohorts and case-control studies allow no active control by the investigator. Either type of study can be prospective or retrospective. Results of studies with discrete outcomes (infected or not, lived or died) often are represented best by a form of the risk ratio with 95% confidence intervals. The potential distorting effects of selection bias, misclassification, and confounding need to be considered.

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